... Diameter(mm)25,50,80,100,150,200,300ConnectionFlangeMaterialCast steel, SSExecutive StandardRefer to CJ274-2008 «Town gas ... sensitive action, good performance of close, with Overpressure automatic cut off function, valve position indication3 Install and adjust are easy ... and production together. Our main products include pressure regulator, steel flange, Stop Valve, ball valve, Filter, insulating joint ...